> > 2. locking should be easier if only the original heap page is
> Yes, but multi-page update already happens now, so HOT is not 
> different on that point.

I was thinking about the case when you "pull back" a tuple, which seems
to be more
difficult than what we have now.


PS: I think it is great that you are doing all this work and explaining
it for us. Thanks.

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